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/* RIP peer support
* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <zebra.h>
#include "if.h"
#include "prefix.h"
#include "command.h"
#include "linklist.h"
#include "thread.h"
#include "memory.h"
#include "ripd/ripd.h"
/* Linked list of RIP peer. */
struct list *peer_list;
static struct rip_peer *
rip_peer_new (void)
{
return XCALLOC (MTYPE_RIP_PEER, sizeof (struct rip_peer));
}
static void
rip_peer_free (struct rip_peer *peer)
{
XFREE (MTYPE_RIP_PEER, peer);
}
struct rip_peer *
rip_peer_lookup (struct in_addr *addr)
{
struct rip_peer *peer;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer))
{
if (IPV4_ADDR_SAME (&peer->addr, addr))
return peer;
}
return NULL;
}
struct rip_peer *
rip_peer_lookup_next (struct in_addr *addr)
{
struct rip_peer *peer;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer))
{
if (htonl (peer->addr.s_addr) > htonl (addr->s_addr))
return peer;
}
return NULL;
}
/* RIP peer is timeout. */
static int
rip_peer_timeout (struct thread *t)
{
struct rip_peer *peer;
peer = THREAD_ARG (t);
listnode_delete (peer_list, peer);
rip_peer_free (peer);
return 0;
}
/* Get RIP peer. At the same time update timeout thread. */
static struct rip_peer *
rip_peer_get (struct in_addr *addr)
{
struct rip_peer *peer;
peer = rip_peer_lookup (addr);
if (peer)
{
if (peer->t_timeout)
thread_cancel (peer->t_timeout);
}
else
{
peer = rip_peer_new ();
peer->addr = *addr;
listnode_add_sort (peer_list, peer);
}
/* Update timeout thread. */
peer->t_timeout = NULL;
thread_add_timer(master, rip_peer_timeout, peer, RIP_PEER_TIMER_DEFAULT,
&peer->t_timeout);
/* Last update time set. */
time (&peer->uptime);
return peer;
}
void
rip_peer_update (struct sockaddr_in *from, u_char version)
{
struct rip_peer *peer;
peer = rip_peer_get (&from->sin_addr);
peer->version = version;
}
void
rip_peer_bad_route (struct sockaddr_in *from)
{
struct rip_peer *peer;
peer = rip_peer_get (&from->sin_addr);
peer->recv_badroutes++;
}
void
rip_peer_bad_packet (struct sockaddr_in *from)
{
struct rip_peer *peer;
peer = rip_peer_get (&from->sin_addr);
peer->recv_badpackets++;
}
/* Display peer uptime. */
static char *
rip_peer_uptime (struct rip_peer *peer, char *buf, size_t len)
{
time_t uptime;
struct tm *tm;
/* If there is no connection has been done before print `never'. */
if (peer->uptime == 0)
{
snprintf (buf, len, "never ");
return buf;
}
/* Get current time. */
uptime = time (NULL);
uptime -= peer->uptime;
tm = gmtime (&uptime);
/* Making formatted timer strings. */
#define ONE_DAY_SECOND 60*60*24
#define ONE_WEEK_SECOND 60*60*24*7
if (uptime < ONE_DAY_SECOND)
snprintf (buf, len, "%02d:%02d:%02d",
tm->tm_hour, tm->tm_min, tm->tm_sec);
else if (uptime < ONE_WEEK_SECOND)
snprintf (buf, len, "%dd%02dh%02dm",
tm->tm_yday, tm->tm_hour, tm->tm_min);
else
snprintf (buf, len, "%02dw%dd%02dh",
tm->tm_yday/7, tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
return buf;
}
void
rip_peer_display (struct vty *vty)
{
struct rip_peer *peer;
struct listnode *node, *nnode;
#define RIP_UPTIME_LEN 25
char timebuf[RIP_UPTIME_LEN];
for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer))
{
vty_out (vty, " %-16s %9d %9d %9d %s%s", inet_ntoa (peer->addr),
peer->recv_badpackets, peer->recv_badroutes,
ZEBRA_RIP_DISTANCE_DEFAULT,
rip_peer_uptime (peer, timebuf, RIP_UPTIME_LEN),
VTY_NEWLINE);
}
}
static int
rip_peer_list_cmp (struct rip_peer *p1, struct rip_peer *p2)
{
return htonl (p1->addr.s_addr) > htonl (p2->addr.s_addr);
}
void
rip_peer_init (void)
{
peer_list = list_new ();
peer_list->cmp = (int (*)(void *, void *)) rip_peer_list_cmp;
}
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